diff --git a/autogen.sh b/autogen.sh
index 995ff2f..0846992 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -5,7 +5,7 @@ rm -f aclocal.m4 ltmain.sh
 
 touch README
 
-echo "Running aclocal..." ; aclocal $ACLOCAL_FLAGS -I m4 || exit 1
+echo "Running aclocal..." ; aclocal $ACLOCAL_FLAGS || exit 1
 echo "Running autoheader..." ; autoheader || exit 1
 echo "Running autoconf..." ; autoconf || exit 1
 echo "Running libtoolize..." ; (libtoolize --copy --automake || glibtoolize --automake) || exit 1
diff --git a/m4/ac_expand_dir.m4 b/m4/ac_expand_dir.m4
deleted file mode 100644
index b5599a0..0000000
--- a/m4/ac_expand_dir.m4
+++ /dev/null
@@ -1,14 +0,0 @@
-dnl AC_EXPAND_DIR(VARNAME, DIR)
-dnl expands occurrences of ${prefix} and ${exec_prefix} in the given DIR,
-dnl and assigns the resulting string to VARNAME
-dnl example: AC_DEFINE_DIR(DATADIR, "$datadir")
-dnl by Alexandre Oliva <oliva@dcc.unicamp.br>
-AC_DEFUN([AC_EXPAND_DIR], [
-	$1=$2
-	$1=`(
-	    test "x$prefix" = xNONE && prefix="$ac_default_prefix"
-	    test "x$exec_prefix" = xNONE && exec_prefix="${prefix}"
-	    eval echo \""[$]$1"\"
-	    )`
-])
-